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ConPTY presents its child's output as a screen buffer and uses CUP / CUD / CNL / VPA to skip over blank rows rather than emitting LFs. The previous behaviour swallowed all of those and the visible content collapsed together. Now the escape parser tracks the screen-relative cursor row, and any CSI that moves the cursor past the current row emits a cursorDown instruction that the view turns into the matching number of empty lines. Column tracking is deliberately omitted: doing it correctly would mean duplicating the view's grapheme-cluster width math in the parser, and ConPTY in practice positions to column 1 after a CR-equivalent, which the existing wx-reset path already handles. ConPTY-internal scrolling needs no special handling either: it only emits cursor-positioning escapes within the first, un-scrolled screenful — once its screen scrolls it switches to plain linefeeds, which the view advances on directly regardless of the tracked cursor. Backward cursor moves are silently dropped — the view's buffer is append-style and can't undo earlier writes. The exception is cursor-home (CUP to row 1): ConPTY emits it at the start of every screen, so rather than drop it we re-anchor the row tracking to the current write position. Without that, a view not rewound in lockstep with ConPTY's screen (the command log, which streams pty output without a rewind) accumulates drift, and every later absolute CUP becomes a dropped backward move that collapses the rows ConPTY positioned with. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> |
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| cheatsheet | ||
| commands | ||
| common | ||
| config | ||
| constants | ||
| env | ||
| fakes | ||
| gocui | ||
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| jsonschema | ||
| logs | ||
| snake | ||
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